ABU DHABI – Khamzat Chimaev wasn’t having Dana White ’s defense of Paulo Costa ’s UFC 294 withdrawal. Chimaev (12-0 MMA, 6-0 UFC) was originally scheduled to face Costa in Saturday’s UFC 294 co-main event at Etihad Arena, but Costa was forced out due to staph infection in his elbow . Stepping in on short notice will be former UFC welterweight champion Kamaru Usman (20-3 MMA, 15-2 UFC)
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